dbsrv.h

来自「Visual C++实践与提高-刘刀桂, 孟繁晶编著」· C头文件 代码 · 共 45 行

#ifndef _DBSERVER_INCLUDE
#define _DBSERVER_INCLUDE

typedef long HRESULT;

#define DEF_EXPORT __declspec(dllexport)

// {30DF3430-0266-11cf-BAA6-00AA003E0EED}
extern const GUID CLSID_DBSAMPLE;
//{ 0x30df3430, 0x266, 0x11cf, { 0xba, 0xa6, 0x0, 0xaa, 0x0, 0x3e, 0xe, 0xed } };

// {30DF3431-0266-11cf-BAA6-00AA003E0EED}
extern const GUID IID_IDBSrvFactory;
//{ 0x30df3431, 0x266, 0x11cf, { 0xba, 0xa6, 0x0, 0xaa, 0x0, 0x3e, 0xe, 0xed } };

class IDB {
  // Interfaces
  public:
	  	// Interface for data access
		virtual HRESULT Read(short nTable, short nRow, LPWSTR lpszData) =0;
		virtual HRESULT Write(short nTable, short nRow, LPCWSTR lpszData) =0;

		// Interface for database management
		virtual HRESULT Create(short &nTable, LPCWSTR lpszName) =0;
		virtual HRESULT Delete(short nTable) =0;

		// Interfase para obtenber informacion sobre la base de datos
		virtual HRESULT GetNumTables(short &nNumTables) =0;
		virtual HRESULT GetTableName(short nTable, LPWSTR lpszName) =0;
		virtual HRESULT GetNumRows(short nTable, short &nRows) =0;

		virtual ULONG Release() =0;
};

class IDBSrvFactory {
	// Interface
	public:
		virtual HRESULT CreateDB(IDB** ppObject) =0;
		virtual ULONG   Release() =0;
};

//HRESULT DEF_EXPORT DllGetClassFactoryObject(IDBSrvFactory ** ppObject);

#endif